aiga 006_10 good env mgt practices for the industrial gas industry

8/2/2019 AIGA 006_10 Good Env Mgt Practices for the Industrial Gas Industry

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GOOD ENVIRONMENTALMANAGEMENT PRACTICES FOR

THE INDUSTRIAL GAS INDUSTRY

AIGA 006/10

GLOBALLY HARMONISED DOCUMENT


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GOOD ENVIRONMENTALMANAGEMENT PRACTICES FOR THE

INDUSTRIAL GAS INDUSTRY

PREPARED BY :

S.C. Bradley AIR PRODUCTS PLC

M. Arrighi SAPIO

S. Duboudin AIR LIQUIDE SA

F. H. Finger EIGA

F. Revuelta PRAXAIR

C. Gomez Delgado PRAXAIR

L. Simic MESSER

C. Szweda LINDE

Disclaimer

All technical publications of AIGA or under AIGAs name, including Codes of practice, Safety procedures and any other technical


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AcknowledgementThis document is adopted from the European Industrial Gases Association document IGCDocument 88/08/E Good Environmental Management Practices for the Industrial Gas Industryand acknowledgement and thanks are hereby given to EIGA for permission granted for the use

of their document.


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Table of Contents

1 Introduction ......................................................................................................................................12 Scope and purpose..........................................................................................................................1

2.1 Scope........................................................................................................................................12.2 Purpose ....................................................................................................................................1

3 Definitions ........................................................................................................................................13.1 Environmental Aspect...............................................................................................................13.2 Environmental Impact...............................................................................................................13.3 Good Environmental Management Practices (GEMPs)...........................................................1

4 Good Environmental Managment Practices....................................................................................24.1 Implementing Good Environmental Management Practices ....................................................24.2 How to use the Appendices......................................................................................................2

APPENDIX A - GEMP FOR ALL FACILITIES ........................................................................................4APPENDIX B - GEMP FOR AIR SEPARATION UNITS AND HELIUM PRODUCTION FACILITIES..11APPENDIX C - GEMP FOR HYDROGEN/CARBON MONOXIDE UNITS...........................................15APPENDIX D - GEMP FOR CARBON DIOXIDE PLANTS ..................................................................19APPENDIX E - GEMP FOR TRUCK MAINTENANCE AND DISTRIBUTION TERMINALS ................22APPENDIX F - GEMP FOR ACETYLENE MANUFACTURING OPERATIONS.................................25APPENDIX G - GEMP FOR CYLINDER FILL and Maintenance OPERATIONS.................................28

APPENDIX H - GEMP FOR CUSTOMER INSTALLATION OPERATIONS.........................................31APPENDIX I - GEMP FOR NITROUS OXIDE PLANTS.......................................................................32


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1 Introduction

This document is a practical guide to good environmental managment practices in the industrial gasesindustry and has been developed in conjunction with the US Compressed Gases Association whopublishes this guidance as P37. It can be used on its own or in conjunction with other EIGApublications on Environmental Management.

The environmental managment system standard ISO 14001 requires organisations to review theirenvironmental aspects and put in place practices to minimise and control their impacts. This

document provides a standardised list that can be used in any industrial gas company.

2 Scope and purpose

2.1 Scope

This document provides guidance on good environmental management practices to industrial gasfacility managers. This document does not give specific advice on health and safety issues, however

consideration must always be given to these issues when conducting operational risk assessmentsbefore undertaking any activity.

Industrial gas facilities have distinct activities and associated environmental aspects that can impactthe environment. This document covers activities at Air Separation and Helium Production facilities,Hydrogen and Carbon Monoxide facilities, Carbon Dioxide facilities, Truck Maintenance andDistribution, Acetylene Manufacturing, Cylinder Fill Operations, Specialty Gases Operations, andCustomer Installation (Bulk Tanks) activities

2.2 Purpose

This document identifies typical industrial gas industry activities and associated environmentalaspects and corresponding practices that can minimize or eliminate those impacts.

Environmental aspects can include wastes, discharges and releases (i.e. solid/hazardous waste, airemissions, wastewater discharges, noise, etc.) generated at various industrial gas facilities.

For each activity, environmental aspects, potential environmental impacts, and good environmental

management practices (GEMPs) have been identified that can be used to prevent pollution, minimizethe generation of wastes, discharges and releases, properly manage any residuals and use of energy,raw materials, water and land

3 Definitions


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4 Good Environmental Managment Practices

4.1 Implementing Good Environmental Management Practices

Companies should periodically and systematically review processes and operating practices toidentify waste, discharge and release reduction opportunities and to optimise the use of resources.

Conducting an inventory will assist in targeting pollution prevention opportunities. When conductingan inventory the following information should be gathered for each waste, discharge or release toassist in prioritising opportunities:

Source of each major waste, discharge or release

Rates of generation Toxicity or hazard characteristics Disposal method and costs

When implementing GEMPs, preference should be given to the following waste minimizationhierarchy:

Reduce at source (most preferred) Reuse or recycle

Treatment and/or energy recovery Disposal (Least Preferred)

Objectives and targets for improvement should then be set for the priority items and these targetsshould be monitored, measured and reviewed on a regular basis.

To the extent practical, companies should systematically identify and implement GEMPs applicable to

their operations. Where laws and regulations have requirements more stringent than those found inthis document, they should be followed.

Site Managers should promote employee awareness and conduct training of GEMPs that apply totheir site. Periodic feedback and suggestions should be solicited from employees on ways to minimizewastes, discharges and releases. Employees should be recognized for significant ideas that improveenvironmental performance, reduce the generation of wastes, discharges and releases.

4.2 How to use the Appendices

The following appendices identify GEMPs applicable to pollution prevention opportunities at thefollowing types of facilities, processes and operations.

Not every facility or operation will have every source, waste, discharge or release listed in eachapplicable appendix. Site Managers should use the appendices as a library to identify those sourcesof potential pollution that do apply to their facility and then implement the recommended, applicable


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Appendix E - Good Environmental Management Practices for Truck Maintenance and DistributionTerminals

Appendix F - Good Management Environmental Practices for Acetylene ManufacturingOperations

Appendix G - Good Management Environmental Practices for Cylinder Fill and CylinderMaintenance Operations (including Specialty Gas Operations)

Appendix H - Good Management Practices for Customer Installations Appendix I - Good Management Practices for Nitrous Oxide Plants


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APPENDIX A - GEMP FOR ALL FACILITIES

Activity/Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesBatteries Heavy metals Waste Disposal Segregate and recycle to the extent feasible.

Boilers, hot waterheaters, emergencygenerators (Fossil fuel-fired)

Particulate matter,carbon monoxide,hydrocarbons, nitrogenoxides, sulphur dioxide

Air

Energy

Operate in accordance with air permit, where applicable.

Operate and maintain equipment to be efficient

Use fuel with low sulphur and solids content.

Boiler blow-down Wastewater, corrosioninhibitors, acids,caustics, oxygenscavenger

Surface water

Discharge through a permitted outfall or sewer connection.

Avoid excessive chemical feed through tight control of water chemistry. Run boiler at optimum concentration cycles to minimize chemical loss,

wastewater discharges, and makeup water consumption Purchase water treatment chemicals in returnable /recyclable containers,

where practical

Boiler water softenerregeneration

Wastewater, salts Surface water Discharge through a permitted outfall or sewer connection. Reuse wastewater, if feasible

Building Heating, lighting and airconditioning

Energy use Monitor energy use

Set improvement targets Use energy efficient lighting and equipment Conduct energy audits Train employees to conserve energy

Building, floor drains Solvents, oils,

detergents, chemicals

Surface water

Soil Groundwater

Keep solvents, oils, and other hazardous materials out of floor drains through

proper storage and handling. Use floor drain plugs in areas of high spill potential or seal drains that are not

needed. Maintain an adequate supply of spill kits in areas of high spill potential.

Avoid hosing down areas. Use dry cleanup techniques.


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APPENDIX A GEMP FOR ALL FACILITIES

Activity/Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesBuilding and insulationmaterials

Asbestos Air Waste Disposal

Notify the appropriate agency, as required, in advance of any asbestosdemolition or renovation

Use only qualified asbestos removal contractors when removing or repairingasbestos.

Contractors must remove asbestos materials according to regulatoryrequirements. Place waste in double-lined plastic bags or in drums withproper labels. Wet down asbestos during removal, handling and disposal.

Dispose of asbestos through an approved disposal contractor.

Chemical and wasteloading/unloading areas

Diesel fuel, heating oil,acetone, lubricatingoils, solvents, bleach,sulphuric acid, biocides,ethylene glycol,propylene glycol, watertreatment corrosioninhibitors, caustic, usedoil, and similar chemicalor waste-like materials

Soil Surface water

Groundwater Air

Avoid positioning transport vehicles near or over storm drains. Have spill kits, booms, sewer block mats readily available.

Check integrity of transfer hoses, fittings, and connections. Ensure the correct fill lines and containers/tanks are identified prior to

loading/unloading.

Illuminate unloading areas if material transfer occurs at night.

Use drip pans and buckets to catch small leaks from transfer hoses andfittings.

Prevent overfilling of storage tanks during deliveries through procedural orengineering controls.

Report and clean up any spills or leaks immediately.

Develop and implement a Site Emergency/Spill Plan.


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APPENDIX A - GEMP FOR ALL FACILITIES

Activity/Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesEquipment and partscleaning

Solvents anddetergents

Soil Surface Water Groundwater Air

Advice on cleaning for oxygen service can be found in CGA Pamphlet G-4.1Cleaning Equipment for Oxygen Service and EIGA Document 33/06 (AIGA012/04)

Minimize solvent/chemical purchases and use. Dont buy and use more thanneeded.

Keep containers and parts cleaners closed when not in use Use drip pans to collect solvents.

Collect spent solvents for recycling or disposal through a licensed vendor.

Do not pour solvents down any drains or on the ground. Do not mix spent solvents with used oil or other chemicals.

Report and clean up any spills immediately and follow emergencyprocedures.

Determine if spent detergents can be discharged to sanitary sewer.

Fluorescent lightfixtures

Mercury, PCB ballast Waste Disposal Recycle/dispose lamps and ballast via approved recycling/disposalcontractor.

Replace with mercury-free or low-mercury lamps.

Fuelling island Diesel fuel, gasoline Soil Surface Water

Groundwater Air

Check fuel dispenser sump routinely for leaks and product /wateraccumulation

Maintain adequate supply of spill absorbent at fuelling station.

Where present, periodically check oil/water separator. Check housekeeping. Remove any oil stained gravel. Avoid topping off vehicle fuel tanks.

Avoid unattended filling of vehicles.

Avoid hosing down area. Use dry cleanup techniques.

Minimize rain/storm water run-on into fuel island area. Install canopy, where practical, to keep rainfall off fuelling island.

Halon fire suppressionsystems

Halon Depletion of ozonelayer

Maintain system to avoid leaks. As suitable halon replacements are identified,recover halon and place in halon banks.

New systems must be designed without halon.

Mercury switches andother mercury-containing devices

Mercury Waste Disposal Recycle via approved recycler.

Have mercury spill kits available.


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APPENDIX A GEMP FOR ALL FACILITIES

Source Environmental Aspect Potential Impact(s) Good Environmental Management Practices

Product venting,compressors, traffic,etc.)

Noise Community Design and install, compressors, expanders and other equipment inaccordance with local noise requirements.

Use appropriate noise-attenuation measures as required (sound insulation,noise curtains, buildings, walls).

Select sites with adequate land and distance to buffer noise. Site equipment in a location that will minimize the noise impact to

neighbours.

Minimize nighttime noise-generating activities.

See EIGA document on Noise

Sanitary waste (Foul)systems

Sewage Surface water Soil

Groundwater

Do not dispose of chemicals down sinks, drains, or toilets. Dispose of sanitary wastes through permitted municipal sanitary sewer,

septic tank, or onsite package treatment.

When onsite package treatment unit is used, conduct appropriate preventivemaintenance and testing. Keep operator certifications current, whererequired.

Scrap metal, includingcylinder valves,cylinders (exceptacetylene cylinders)used equipment, etc.

Recyclable materials Natural resource Waste disposal

Purge any gases from scrap cylinders. Remove any fluids contained in equipment.

Check any coatings or insulation on the equipment for asbestos and ifpresent remove before scrapping equipment.

Recycle through scrap metal dealer.

Storage tanks aboveground (ASTs)

Heating oil, diesel fuel,acetone, used oil,gasoline

Soil

Groundwater

Surface Water Air

Provide secondary containment for tank and fill port.

Provide overfill protection.

Obtain regulatory approvals Install barriers to protect tank from vehicular traffic. Provide spill kit near tank.

Prepare emergency plan to handle accidental discharges.


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APPENDIX B - GEMP FOR AIR SEPARATION UNITS AND HELIUM PRODUCTION FACILITIES


Argon Production Ammonia (if NH3dissociation methodused)

Air emission Regular maintenance to minimize emissions Switch to hydrogen supply, where practical

Cold box insulation Rock wool, perlite,vermiculite

Waste Disposal Energy efficiency

Check for ice spots Replace insulation on shut down Reuse perlite and vermiculite as a soil conditioner, where allowed.

Recycle, where possible.

Dispose of as solid waste through an approved disposal contractor.

Compressors andvacuum pumps

Lubricating oil Soil

Surface Water

Waste Disposal Groundwater

Minimize leaks through preventive maintenance

Where present, keep foundation curbing and drains free of debris foreffective drainage to oil/water separator.

Use absorbents to minimize oil seepage off of foundations that are not tied toan oil/water separator.

Where practical, install roof over compressors to prevent contaminated stormwater.

Recycle used oil, and where possible, saturated absorbents through anapproved oil recycler.

Do not mix solvents or other chemicals with used oil.

Used oil contaminated with freons or solvents requires special disposal.

Return empty drums to original supplier or recycle through an approved drumreconditioner, where practical.


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Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesCompressor -condensate

Low pH (acidic), copper,nickel, lead

Surface Water

Groundwater

Do not discharge onto the ground.

Discharge through a permitted outfall or sewer connection. Reuse as makeup to cooling tower, where feasible.

Treat any excessive levels of metals. Neutralize low pH before discharging.

Compressor - vents Lubricating oil mists Air Soil

Surface water

Install oil demisters to collect oil mist emissions. Recycle the collected oil through an approved oil recycler.

Cooler system -chemical wash

Acids, metals, solids,chelants

Surface Water

Waste Disposal

Dispose of spent chemical cleaning solutions through an approved disposalcontractor

Cooling systems closed loop

Ethylene glycol,propylene glycol, andsimilar heat exchangefluids

Soil

Surface Water Waste Disposal

Groundwater

Minimize leaks through preventive maintenance.

Maintain proper level of corrosion inhibitors to extend life of solutions. Recycle glycols via approved recycler.

Dispose of spent solutions through an approved disposal contractor.

Cooling tower -blowdown

Biocides, acids,corrosion inhibitors

Surface water

Natural Resource


Avoid use of chromate-based or zinc-based corrosion inhibitors. Avoid excessive chemical feed through tight control of water chemistry.

Run cooling tower at optimum concentration cycles to minimize chemicalloss, wastewater discharges, and makeup water consumption.

Purchase water treatment chemicals in bulk or returnable containers insteadof drums, where practical.

Return empty drums to original supplier or recycle through an approved drum

reconditioner, where practical. Use of existing supplier of chemicals and obtain any necessary permit

modifications before switching chemicals.


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Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesCooling tower - mists Legionella risk Legionella Planned maintenance and disinfection of cooling systems

Regular testing of systems for Legionella.

Cooling tower -sidestream filterbackwash

Solids Surface water Treat if required before discharge through a permitted outfall or sewerconnection.

Cooling tower - sludge Solids, heavy metals(chromium, copper,

zinc)

Waste Disposal Test for presence of heavy metals to determine if a hazardous waste.

Dispose of through an approved disposal contractor.

Electricity Indirect Energy use

Air Water

Solid waste

Design, purchase and maintain equipment to operate efficiently and minimizeenergy use.

Conduct energy audits to identify potential opportunities to improve energyefficiency.

Train employees to conserve energy.

Fuel-fired vaporizersand Temperature

Swing Adsorption units

Particulate matter,carbon monoxide,

hydrocarbons, nitrogenoxides, sulphur dioxide

Air

Energy

Operate in accordance with air permit, where applicable.

Operate and maintain equipment to be efficient

Use fuel with low sulphur and solids content.

Ion mobility analyzers,Helium IonizationDetectors, AlnorDewpointers

Radioactive materials Waste Disposal Return radioactive cells to manufacturer.

Do not throw in normal (waste) trash.

Report all pending transfers of radioactive materials to and from the site toapplicable regulatory agencies.

Perform wipe tests for leaks, where required.

Maintain all warning labels on analyzers. Obtain appropriate regulatory approvals to own and use radioactive materials.

Pre-purification units Silica gel, molecularsieve, alumina,activated charcoal

Waste Disposal If feasible, recycle, reuse or regenerate molecular sieves. Dispose of as solid waste through an approved disposal contractor.


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Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesProcess refrigeration -ammonia systems

Accidental release,fugitive release

Air Minimize leaks from valves, flanges, etc., through PM, using Enviroseals, etc.

Use purging systems designed to minimize refrigerant releases. Recover ammonia to the maximum extent possible during maintenance,

through receivers. Use water-scrubbing systems to treat major ammonia releases.

Process refrigeration -Freon systems

Freons (CFCs, HCFC,HFCs, PFCs),

Ozone Depletion Global Warming

Minimize leaks from valves, flanges, etc., through preventive maintenance. Monitor and document the rate of consumption of freons and ammonia to

detect leaks.

Repair leaks promptly. DO NOT vent freons to atmosphere. Evacuate freons to prescribed levels

before major maintenance and servicing using certified technicians andapproved recovery and recycling equipment.

Reuse excess freon inventories at other facilities or recycle through anapproved recycling contractor.

Where practical, retrofit units with more environmentally friendly refrigerants.

Product Storage and

Transfer

Nitrogen, oxygen,

helium, argon

Energy use Minimize venting of cryogenic gases

Product venting,Compressors, traffic,etc.)

Noise Community Design and install, compressors, expanders and other equipment inaccordance with local noise requirements.


Select sites with adequate land and distance to buffer noise.

Site equipment in a location that will minimize the noise impact to neighbours.


See EIGA document on Noise

Used filters Filters with dustdeposits

Waste disposal Change out filters as part of planned maintenance to maintain efficiency Test for presence of radioactivity, if warranted, or other dust contaminants to

determine if a hazardous waste, where appropriate


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APPENDIX C - GEMP FOR HYDROGEN/CARBON MONOXIDE UNITS

Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesAmine adsorptionsystem

Monoethanolamine Surface water

Soil

Contain equipment leaks.

Discharge through a permitted outfall or sewer connection, if allowed.


Catalysts(SCR, High/Low Temp

Shift, Reformer,Prereformer,Hydrotreater

Various metals(Titanium, vanadium,

tungsten, iron,chromium, copper,molybdenum, cobalt,nickel)

Waste Disposal Recycle through approved recycling contractor, where feasible. Where not feasible, dispose of through an approved disposal contractor.




Groundwater



Use absorbents to minimize oil seepage off of foundations that are not tied to

an oil/water separator. Where practical, install roof over compressors to prevent contaminated storm

water. Recycle used oil, and where possible, saturated absorbents through an

approved oil recycler. Do not mix solvents or other chemicals with used oil.

Used oil contaminated with freons or solvents requires special disposal. Return empty drums to original supplier or recycle through an approved drum

reconditioner, where practical.

Compressor -condensate


Surface Water

Groundwater



Reuse as makeup to cooling tower, where feasible.

Treat any excessive levels of metals. Neutralize low pH before discharging.


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Compressor - vents Lubricating oil mists Air Soil Surface water


Cooling tower -blowdown


Surface water Natural Resource

Discharge through a permitted outfall or sewer connection. Avoid use of chromate-based or zinc-based corrosion inhibitors.

Avoid excessive chemical feed through tight control of water chemistry.

Run cooling tower at optimum concentration cycles to minimize chemical

loss, wastewater discharges, and makeup water consumption. Purchase water treatment chemicals in bulk or returnable/recyclable

containers instead of drums, where practical.


Use of existing supplier of chemicals and obtain any necessary permitmodifications before switching chemicals.

Cooling tower - mists Legionella risk Legionella Planned maintenance and disinfection of cooling systems

Regular testing of systems for LegionellaCooling Water -

sidestream filterbackwash

Solids Surface water Treat if required before discharge through a permitted outfall or sewerconnection.

Cooling tower - sludge Solids, heavy metals(chromium, copper,zinc)



Desulphurisation beds Zinc oxide, zincsulphide

Soil Dispose of through an approved disposal contractor.


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Flaring Noise, Air Emissions Community Design and install, flares, compressors, expanders and other noisyequipment in accordance with external requirements or internal engineeringstandards.


Select sites with adequate land and distance to buffer noise. Install noisy equipment on site in a location that will minimize the noise

impact to neighbours.


Fugitive emissionsfrom compressors,valves, flanges

Hydrocarbons Air Where required, implement leak detection and repair program to controlfugitive emissions from valves, flanges, and compressors.

Repair leaking components promptly.

Process boiler -blowdown

Corrosion inhibitors Surface water

Energy Natural Resource


Avoid excessive chemical feed through tight control of water chemistry. Run boiler at optimum concentration cycles to minimize chemical loss,

wastewater discharges, makeup water consumption, and energyconsumption. Purchase water treatment chemicals in returnable/recyclable containers

instead of drums, where practical.

Return empty drums to supplier or recycle through an approved drumreconditioner.

Process Boiler -FeedwaterPretreatment(RO Reject, softenerreject, demineralizerregeneration, filterbackwash)

Wastewater containingsalts, solids.

Surface water Discharge through a permitted outfall or sewer connection. Reuse wastewater, were feasible.


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Process condensate Wastewater, methanol,ammonia, temperature

Surface water Air Energy Natural resource

Reuse as boiler feedwater makeup, where feasible. Reuse as cooling tower makeup, where feasible. Control dearator vent emissions, when used as boiler feedwater. Discharge to a permitted outfall or sewer connection.

Pressure swingadsorption system

Silica gel, molecularsieve, alumina, carbon,Noise

Waste disposal

Community

If available, recycling through original manufacturer.


Use appropriate noise-attenuation measures as required (sound insulation,

noise curtains, buildings, walls). Select sites with adequate land and distance to buffer noise.

Install noisy equipment on site in a location that will minimize the noiseimpact to neighbours.

Minimize night time noise-generating activities See EIGA document on Noise 85/02

Pressure Swing

Adsorption Purge Gas

Hydrogen

Carbon MonoxideNoise

Air

Community

Use as supplemental fuel source in steam methane reformer or customer fuel

system Install silencer

Steam condensatereturn, steam traps

Wastewater, corrosioninhibitors, low pH,temperature

Surface water Energy

Natural resource

Reuse as boiler feedwater makeup, where feasible. Discharge to a permitted outfall or sewer connection.

Steam MethaneReformer

Particulate matter,carbon monoxide,hydrocarbons, nitrogenoxides, sulphuricdioxide, methanol,ammonia

Air Operate in accordance with air permit.

Use low NOx burners, steam injection, flue gas recirculation, other NOx

control technology, where required. Where present monitor performance of SCR catalyst/NOx control system. Periodically replace SCR catalyst to maintain NOx destruction efficiency.


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APPENDIX D - GEMP FOR CARBON DIOXIDE PLANTS


Catalytic Oxidation Used Catalysts Waste disposal Recycle through approved recycling contractor if feasible Where not feasible dispose of through approved contractor


Lubricating oil Soil Surface Water

Waste Disposal

Groundwater

Minimize leaks through preventive maintenance Where present, keep foundation curbing and drains free of debris for effective

drainage to oil/water separator.




Do not mix solvents or other chemicals with used oil. Used oil contaminated with freons or solvents requires special disposal.




Surface Water Groundwater

Do not discharge onto the ground. Discharge through a permitted outfall or sewer connection.

Reuse as makeup to cooling tower, where feasible.

Treat any excessive levels of metals.

Neutralize low pH before discharging.

Compressor - vents Lubricating oil mists Air Soil

Surface water



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Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesCooling tower -blowdown


Surface water

Natural Resource


Avoid use of chromate-based or zinc-based corrosion inhibitors.

Avoid excessive chemical feed through tight control of water chemistry. Run cooling tower at optimum concentration cycles to minimize chemical loss,

wastewater discharges, and makeup water consumption. Purchase water treatment chemicals in bulk or returnable containers instead of

drums, where practical. Return empty drums to original supplier or recycle through an approved drum


Use of existing supplier of chemicals and obtain any necessary permitmodifications before switching chemicals.

Cooling Tower - mists Legionella risk Legionella Planned maintenance and disinfection of cooling systems. Regular testing of systems for Legionella

Cooling tower - sludge Solids, heavy metals(chromium, copper,zinc)



Electricity Indirect Energy use

Air Water Solid waste

Design, purchase and maintain equipment to operate efficiently and minimizeenergy use.

Conduct energy audits to identify potential opportunities to improve energyefficiency.

Train employees to conserve energy.

Fuel Burning to produceproduct

Natural Resources Use natural sources of CO2 or byproduct streams as feed, where possible

Process refrigeration -

ammonia systems

Accidental release,

fugitive release

Air, impact of

ammonia

Minimize leaks from valves, flanges, etc., through PM, using Enviroseals, etc.

Use purging systems designed to minimize refrigerant releases.

Recover ammonia to the maximum extent possible during maintenance,through receivers.

Use water-scrubbing systems to treat major ammonia releases.


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Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesProcess refrigeration -Freon systems

Freons (CFCs, HCFC,HFCs, PFCs),

Ozone Depletion

Global Warming

Air, impact ofammonia

Minimize leaks from valves, flanges, etc., through preventive maintenance.

Monitor and document the rate of consumption of freons and ammonia todetect leaks.

Repair leaks promptly.

DO NOT vent freons to atmosphere. Evacuate freons to prescribed levelsbefore major maintenance and servicing using certified technicians andapproved recovery and recycling equipment.



Venting Carbon Dioxideemissions

Air Global Warming

Optimise plant efficiency Avoid venting where possible


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APPENDIX E - GEMP FOR TRUCK MAINTENANCE AND DISTRIBUTION TERMINALS


Brake shoes Asbestos Waste

Air

Do not use asbestos brake shoes

Replace existing shoes Dispose of as hazardous waste to authorized contractor

Cleaners - engine,brake and other

specialty maintenanceproducts

Various chemicals,aerosol cans

Soil

Air

When using specialty-cleaning products apply product to rag then apply theproduct containing rag to surface being cleaned.

Minimize overspray, drips, and residues. Use absorbent materials to collectexcess.

Do not mix spent specialty products with parts washer solvents.

Empty aerosol cans (contents no longer under pressure) before discardinginto non hazardous waste (trash), if permitted.

Do not clean parts over ground or drain. Use drip pan.

Motor oil changes Used oil, oil filters Soil

Surface water Waste Disposal

Puncture filter dome end and hot drain used oil for 24 hours.

Recycle used oil filters, where service is available. Recycle used oil through an approved oil recycler

Do not mix solvents or other chemicals with used oil. Do not pour oil on ground or down drain.

Motor Vehicle AirConditioners

Refrigerants (CFCs,HCFC, HFCs)

Ozone Depletion

Global Warming

Air

Minimize leaks through preventive maintenance.


DO NOT vent freons to atmosphere. Recover freons to the maximum extentpossible during maintenance and servicing by certified technicians usingapproved recovery and recycling equipment.

Where practical, retrofit units with less harmful freons that are approved byan environmental representative.

Radiator servicing Ethylene glycol,Propylene glycol, andsimilar heat exchangefluids (e.g. DowTherm)

Soil


Recycle spent antifreeze via approved recycler.

Dispose of spent solutions as a last resort through an approved disposalcontractor.

Do not pour antifreeze on ground or down drain. Use drip pan to collect.

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Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesTruck emissions (fueleconomy

Carbon monoxide,nitrogen oxides,hydrocarbons,particulates (diesel)

Air

Energy

Optimise route scheduling and routes

Maintain vehicles to operate efficiently while minimizing emissions. Minimize trips and distances travelled to extent possible by maximizing load

volume going out and minimizing load volume returned. Purchase energy-efficient vehicles that meet regulatory emission standards.

Use low sulphur fuel and particle traps where feasible. Use different fuels e.g. LNG hydrogen, CNG

Measure and monitor fuel consumption and set targets

Truck batteries Lead, sulphuric acid Soil

Waste Disposal

Return used batteries to dealer when purchasing new batteries.

Protect batteries from severe cold to prevent freezing and release of batteryacid. Store batteries indoors on impervious surfaces, whenever possible.

Store batteries on wooden pallets (one battery high). Do not throw batteries in normal waste (trash) container.

Do not try to break open and reclaim lead from batteries on site.

Truck tires Tyres Waste Disposal

Fuel Use

Recycle used tires back to dealer when purchasing new tires.

Use re-treaded tires, where appropriate Maintain proper tyre inflation

Truck breakdowns andaccidents

Diesel fuel, antifreeze,motor oil, hydraulic oil

Soil

Surface water

Waste Disposal

Where appropriate, keep spill kits stocked on each truck.

Report and cleanup spills immediately.

Take cleanup debris from small incidents back to home terminal for disposal.

Use cleanup contractor for larger spills. Contact an environmentalrepresentative for assistance.

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Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesVehicle washing Oils, greases,

detergents, suspendedsolids, salts, sludgeresidual

Surface water

Soil

Wash vehicles in wash bays or other designated areas.

Discharge through a permitted outfall or sewer connection. Discharging to astorm water drain is prohibited.

Remove accumulated solids/sludge from wash bay sump or grit chamberregularly.

Wash bay areas that do not have a solid collection sump, use a fabric drainfiltering device to prevent accumulated solids/sludge from wash bay fromentering and accumulating in oil/water separator.

Use only non-phosphate, non-emulsifying detergents quick oil releasedetergents.

Treat wash water through a solids separator prior to discharge

Do not discharge detergents to an oil/water separator.

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APPENDIX F - GEMP FOR ACETYLENE MANUFACTURING OPERATIONS


Acetylene Generator Silica, Ferro Silica,Carbon

Waste Disposal Minimize impurities in purchased carbide Clean generator regularly Dispose of residuals to an authorized contractor as non hazardous waste

Acetylene generatorand lime pit area Calcium hydroxide(lime) scale/deposits,acid wash water used toremove lime scale build-up

Waste Disposal

Dispose of through an approved disposal contractor. Collect acid wash water and reuse as a first rinse wash water the next timeacid washing is needed.

Combine with lime slurry where possible.

Neutralize with lime before discharge.

Periodically check integrity of lime pit.

Carbide lime slurry Calcium hydroxide(lime) solids, water

Surface water

Soil Waste Disposal

Decant water from solids.

Reuse decanted wastewater back in acetylene manufacturing process. Reuse co-product lime as raw material for offsite wastewater treatment,

agricultural/soil amendment, etc. Refer to CGA Pamphlet 1.5



Surface Water







Do not mix solvents or other chemicals with used oil.

Used oil contaminated with freons or solvents requires special disposal. Return empty drums to original supplier or recycle through an approved drum


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APPENDIX F - GOOD ENVIRONMENTAL MANAGEMENT PRACTICES FOR ACETYLENE MANUFACTURING OPERATIONS




Surface Water Groundwater

Do not discharge onto the ground. Discharge through a permitted outfall or sewer connection. Reuse as makeup to cooling tower, where feasible. Treat any excessive levels of metals.

Neutralize low pH before discharging.

Compressor - vents Lubricating oil mists Air

Soil

Surface water

Install oil demisters to collect oil mist emissions.

Recycle the collected oil through an approved oil recycler.

Cooling water Wastewater Natural Resource

Surface water

Reuse as makeup to acetylene generator

Cylinder painting Paint, paint thinners,paint cans, aerosolcans, paint rollers andbrushes, volatile organiccompounds, paint boothfilters

Air Waste Disposal

Soil

Use water-based paints or paint with low VOC content. Discharge water-based paint rinsewater through a permitted sewer

connection. Do not pour on ground or in storm sewer.

Install paint booth for high volume painting. (An air permit may be required)

Use aerosol can puncture system to release propellant and drain liquid. Do not throw liquids in trash dumpster. Allow empty paint cans, paintbrushes

and rollers to dry before disposing. Collect used paint, paint thinners for disposal via an approved disposal

contractor. Do not mix with other wastes or pour on ground.

Cylinders - venting Acetylene Air Vent gas back to generator or gas holder for recovery Only vent cylinder gases allowed by air permit, air regulations or air permit

exemption. Vent flammable gases to appropriate control device(s).

Refer to EIGA 30/10 Disposal of Gases and CGA P-22

Cylinders - scrap Acetone, asbestos Air Waste Disposal

Drain acetylene from cylinder. Remove and recover acetone, to the extent possible.


Refer to CGA P-22. and EIGA 05/06

Carbide dust Nuisance, dust Air Minimize by using closed filling system

Return to generator

Dispose of in lime pit

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APPENDIX F - GEMP FOR ACETYLENE MANUFACTURING OPERATIONS


Cylinders - surfacepreparation

Abrasive blastingmedia, lead, chromium,particulates, silica, paintchips

Air Waste Disposal

Conduct surface prep operations in accordance with air permit or air permitexemption.

Control particulate emissions through dust collector.

Test waste for toxic metals, such as lead, chromium, cadmium, to determineif the waste is a hazardous waste.

Dispose of waste through an approved disposal contractor.

Cylinders - valvepacking material

Asbestos Waste Disposal Dispose of through an approved disposal contractor. Keep asbestos materials wet and keep in plastic bags prior to disposal.

Dryers Silica Gel, CalciumChloride

Waste disposal Optimise dryer operation

Check for contamination before disposal Dispose of through an approved disposal contractor

Gas Purification Mediafrom high purity filloperations (e.g.

Monkey Dust)

Arsenic, mercury,chromic acid, sulphuricacid, Ferric Chloride,Ferric oxide

Waste Disposal Use to maximum capacity of purification before switching out spent mediaDispose of through an approved disposal contractor.

Test for hazardous constituents.

Stabilizers Acetone, DMF Air Waste disposal

Recover the stabilizer to the extent possible Refer to EIGA document 05/06 and CGA P-22

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APPENDIX G - GEMP FOR CYLINDER FILL AND MAINTENANCE OPERATIONS



Lubricating oil Soil Surface Water


Minimize leaks through preventive maintenance Where present, keep foundation curbing and drains free of debris for

effective drainage to oil/water separator. Use absorbents to minimize oil seepage off of foundations that are not tied to

an oil/water separator. Where practical, install roof over compressors to prevent contaminated storm

water.


Do not mix solvents or other chemicals with used oil. Used oil contaminated with freons or solvents requires special disposal.




Surface Water

Groundwater



Reuse as makeup to cooling tower, where feasible. Treat any excessive levels of metals. Neutralize low pH before discharging.

Compressor - vents Lubricating oil mists Air

Soil

Surface water

Install oil demisters to collect oil mist emissions.

Recycle the collected oil through an approved oil recycler.

Cylinder - filling Flammable/ ToxicGases

Air Odour Nuisance

Design and maintain filling equipment to minimize leaks. When filling flammable/toxic gases, provide continuous/ periodic monitoring

to ensure system integrity. Properly train employees to conduct filling and follow filling procedures.

Consider suitable treatment before releasing gases containing flammable(generally) or toxic materials, in some cases, an air permit is required


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APPENDIX H - GEMP FOR CUSTOMER INSTALLATION OPERATIONS

Source Environmental Aspect Potential Impacts Good Environmental Management PracticesCarbon molecularsieve, ceramicmolecular sieve andaluminasilica gel

Carbon, alumina Waste Disposal Plan ahead to make arrangements for disposal. Adequate lead time isneeded.

If the customer is responsible for disposal, follow customers procedures.

Equipment and parts Spent solvents anddetergents

Soil

Surface Water

Groundwater

Purchase parts pre cleaned

Minimize solvent/chemical purchases. Dont buy more than needed.

Keep containers and parts cleaners closed when not in use Use drip pans to collect solvents.

Collect spent solvents for recycling through an approved recycler.

Do not pour solvents down any drains or on the ground.

Do not mix spent solvents with used oil or other chemicals. Report and clean up any spills immediately. Use biodegradable detergents whenever possible. Determine if spent detergents can be discharged to sanitary sewer.

Process refrigerationsystems

Freons (CFCs, HCFC,HFCs, PFCs), Ammonia


Air


detect leaks.


DO NOT vent freons to atmosphere. Evacuate freons to prescribed levelsbefore major maintenance and servicing using certified technicians andapproved recovery and recycling equipment.

Reuse excess Freon inventories at other facilities or recycle through anapproved recycling contractor.


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APPENDIX I - GEMP FOR NITROUS OXIDE PLANTS

Source Environmental Aspect Potential Impact(s) Good Environmental Management PracticesScrubber Effluent Waste alkali or acid

scrubbing solutions,could contain metalionsPermanganate,sulphuric acid

Waste disposal

Water

Design and run scrubber efficiently to minimize the use of acid/alkali

Design and run scrubbing system to prevent leaks and spills

Treat liquid waste before landfill disposal

AluminaSilica gel

Carbon, alumina Waste Disposal Plan ahead to make arrangements for disposal. Adequate lead-time is needed.

Process refrigeration -Freon systems

Freons (CFCs, HCFC,HFCs, PFCs),Ammonia


Air


detect leaks.

Repair leaks promptly. DO NOT vent freons to atmosphere. Evacuate freons to prescribed levels

before major maintenance and servicing using certified technicians andapproved recovery and recycling equipment.



Cylinders - purging Nitrous Oxide Air Recover the product if technically and economically feasible

Only vent cylinder gases allowed by air permit, air regulations or air permitexemption.

Top fill cylinders whenever feasible to minimize cylinder purging emissions. Refer to EIGA document 30/10 Disposal of gases or CGA P-22

aiga 006_10 good env mgt practices for the industrial gas industry

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